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What direct drive blower will produce the most power? I'm looking for input for my next build. I now have a Blower Shop 14-71 billet blower, I know it's not the most efficient, but I'd like to get opinions about swapping it on the next build for a Hampton 14-71 (billet 2 lobe) a Whipple 8.3 or a PSI..... Engine will be 600+ CID with an Imco SCX-4.
 

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I am looking forward to watching this thread!! Of the right guys get involved its gonna get interesting for sure!
 

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......centrifugal!
go with the PSI....we've raced with both the Whipple and PSI (both cars and boats) Liked the PSI much better...but for our Daytona we're going with the Blower shop piece..with fuel injection..
 

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PSI... less hp loss to turn. Less heat in the air mixture. Bad ass!
A blower shop piece looks cooler, though.
Wags
 

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PSI... less hp loss to turn. Less heat in the air mixture. Bad ass!
A blower shop piece looks cooler, though.
Wags
When I grow up, I want a billet PSI ?
 

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Hampton 2 lobe

What direct drive blower will produce the most power? I'm looking for input for my next build. I now have a Blower Shop 14-71 billet blower, I know it's not the most efficient, but I'd like to get opinions about swapping it on the next build for a Hampton 14-71 (billet 2 lobe) a Whipple 8.3 or a PSI..... Engine will be 600+ CID with an Imco SCX-4.
I was told alan johnson built a four lobe blower years ago. The whole idea was to cut down on pulsing. Im not sure if the design was outlawed or didn't work, but to my knowlege he never manufactured them. The pulsing idea makes me wonder about the hampton 2 lobe. Im heading down to don hamptons shop in a week to pick up my new 14-71. Hopefully I can pick his brain on the 2 lobe. It sounds like a great idea. More cubic inches of air per revolution with a smaller blower equals less heat and power loss, and no stripping maintanence. I think the ONLY reason you don't see them around is because its kind of a bastered child that isn't allowed in most racing organizations rule book. Hampton is the the man, not only does he say it works but he guarantees it on his web page. Kinda hard to argue with that....PSI is the shit but its gonna break the bank.....$10,000 plus?? I say get the 2 lobe, be different,.... and let us all know how it works !!!-whiskey
 

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I was told alan johnson built a four lobe blower years ago. The whole idea was to cut down on pulsing. Im not sure if the design was outlawed or didn't work, but to my knowlege he never manufactured them. The pulsing idea makes me wonder about the hampton 2 lobe. Im heading down to don hamptons shop in a week to pick up my new 14-71. Hopefully I can pick his brain on the 2 lobe. It sounds like a great idea. More cubic inches of air per revolution with a smaller blower equals less heat and power loss, and no stripping maintanence. I think the ONLY reason you don't see them around is because its kind of a bastered child that isn't allowed in most racing organizations rule book. Hampton is the the man, not only does he say it works but he guarantees it on his web page. Kinda hard to argue with that....PSI is the shit but its gonna break the bank.....$10,000 plus?? I say get the 2 lobe, be different,.... and let us all know how it works !!!-whiskey
you buying your Uncles Daytona????
 

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A man admits when he is wrong. That BILLET CASE PSI is cooler than a blower shop piece.
BUT I love my blower shop 10. They support us boat guys a bunch. They helped sponsor me last year. Great guys. Great service.
I'd go blower shop.
Wags
 

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......centrifugal!
Have to agree with this. Way more effecient than a roots or screw.
Some of us are in a bigger hurry than a centrif. I always have to ask, how much boost will one of those belt driven turbos make at 2500. At least a turbo will lift the heads right off the block at 2500 if you don't have something to limit it.

If you want efficiency, buy a Volt or Prius.



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Discussion Starter #19
Some of us are in a bigger hurry than a centrif. I always have to ask, how much boost will one of those belt driven turbos make at 2500. At least a turbo will lift the heads right off the block at 2500 if you don't have something to limit it.

If you want efficiency, buy a Volt or Prius.
I've only seen a few centrifugal's on boats, but none yet on 1200+ hp builds. I'm just trying to get input about which roots or screw will make the most power. If there is only a minimal advantage I'll just stick with what i've got.

And I'd get a volt or a prius just about as soon as you'd catch me wearing a 99%'r t shirt at an occupy camp........
 

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Has anyone switched from one to another and seen a gain?
Sorry just found this thread, I back to backed with a 14-71 to a whipple r980 and psi b rotor, on pump gas
600 ci
mininum 200 hp increase over a standard rotor 14-71, can give you more info if you need it too, spent a month on the dyno
 
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